.head {
    height: 800px;
    background-color: pink;
}

.head_son {
    width: 100%;
    height: 70px;
    background-color: aliceblue;
    position: fixed;
    float: right;
    z-index: 9999;
}

.head_son .left {
    height: 100%;
    width: 250px;
    list-style: none;
    /* background-color: black; */
    float: left;
    margin-left: 250px;
}

.head_son .right {
    float: right;
    height: 100%;
    /* width: 600px; */
    margin-right: 180px;
}

.head_son .right ul {
    height: 100%;
}

.head_son .right ul li {
    float: left;
    width: 150px;
    text-align: center;
    line-height: 70px;
    box-sizing: border-box;
}

.head_son .right ul li:hover {
    border-bottom: 3px solid #a8463d;
}


.head_son .left .logo {
    width: 70px;
    float: left;
    height: 100%;
    background: url('../img/logo.png') no-repeat;
    background-size: cover;
}

.head_son .left .text {
    float: left;
    width: 100px;
    text-align: center;
    height: 100%;
    line-height: 70px;
}

.head .body {
    width: 100%;
    height: 100%;
    background: url('../img/起源.jpg')no-repeat;
    background-size: cover;
}


#article1 .all {
    width: 1200px;
    height: 600px;
    display: flex;
    flex-direction: row;
}

#article1 .all .right {
    flex: 8;
    line-height: 35px;
    width: 850px;
}

#article1 .all .left {
    /* background-color: #a8463d; */
    flex: 2;
    margin: 0;
    font-family: '汉仪';
    font-size: 90px;
    color: #b84e44;
}

#article1 .all .left .rr {
    text-align: right;

}

ul li a {
    display: inline-block;
    width: 100%;
    height: 100%;
}

.fathermainbox {
    width: 1200px;
    margin-top: 40px;
    display: flex;
    justify-content: space-around;
}

#article2 .section .mianbox {
    width: 250px;
    height: 300px;
    perspective: 1000px;
}


.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.6s;
    transform-style: preserve-3d;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
}

.mianbox:hover .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.flip-card-front {
    background-color: #fff;
    color: black;
}

.flip-card-back {
    background-color: #fff;
    /* color: white; */
    transform: rotateY(180deg);
}

.flip-card-back .text {
    margin: 15px;
}

.flip-card-back:nth-child(1) .text {
    margin-bottom: 0;
}

/* .flip-card-back .text{} */
.image0 .image {
    width: 100%;
    height: 30%;
    background: url('../img/形成-图1.png') no-repeat;
    background-size: contain;
    box-sizing: border-box;
    background-position: center;
}

.image1 .image {
    width: 100%;
    height: 30%;
    background: url('../img/成熟-图2.png') no-repeat;
    background-size: contain;
    background-position: center;
    box-sizing: border-box;
}

.image2 .image {
    width: 100%;
    height: 30%;
    background: url('../img/鼎盛-图3.png') no-repeat;
    background-size: contain;
    background-position: center;
    box-sizing: border-box;
}

.allin {
    margin-top: 40px;
    width: 1200px;
    height: 700px;
    /* background-color: #a8463d; */
    display: flex;
}

.allin .left {
    flex: 1;
    margin-top: 40px;
}

.allin .right {
    flex: 1;
    margin-top: 40px;
    /* background-color: #fff; */
}